The triquetra has been found on runestones in Northern Europe and on early Germanic coins. It presumably had pagan religious meaning and it bears a resemblance to the Valknut, a symbol associated with Odin.
G Scale Trains are usually referred to as Garden Trains since they are the largest of the model trains and are used outdoors as well as indoors.
Although nearly forgotten after World War II, #1 scale regained some popularity in the UK as far back as the 1960s, and is experiencing a renaissance today in North America. The major model train manufacturer MTH is one of the new sources for modern #1 scale trains in North American prototypes.